fix(showcase): gate starter smoke tests on integration.deployed

The STARTERS filter in integration-smoke.spec.ts gated on
`i.starter?.deployed === true`, but the manifest→registry bundler
(showcase/scripts/bundle-demo-content.ts + generate-registry.ts)
does not carry that field forward from the source YAML manifests.
At registry regen time (commit 14537d8), all `starter.deployed`
values were dropped.

Result: the filter matched zero entries, `Deployed Starters`
yielded no tests, and the starter-deployed-smoke CI workflow has
failed on every run (>15 consecutive reds starting 2026-04-18) with
Playwright erroring `No tests found.` against
`--grep "@starter-health|@starter-agent|@starter-chat"`.

Switch to integration-level `i.deployed`, which is the single
deployment flag the registry actually carries and which the
INTEGRATIONS array in the same file already uses for its own
gating. This keeps both filters anchored to the same source of
truth.

Verified locally: `--grep "@starter-health|@starter-agent|@starter-chat" --list`
now discovers 17 tests (one per deployed integration).

Author: jpr5

showcase/tests/e2e/integration-smoke.spec.ts

@@ -371,6 +371,15 @@ type RegistryIntegration = (typeof registry)["integrations"][number];
 
 const STARTER_SLUG = process.env.STARTER_SLUG;
 
+// Registry uses integration-level `deployed` as the single deployment flag.
+// An earlier iteration had `starter.deployed` as a per-starter override, but
+// the manifest→registry bundler (showcase/scripts/bundle-demo-content.ts +
+// generate-registry.ts) doesn't carry that field forward from the source YAML
+// manifests, so any value written there is dropped on regen. Gating on
+// `i.deployed === true` matches how the INTEGRATIONS array above filters
+// `activeIntegrations` and keeps both filters anchored to the same source of
+// truth. Without this, the Deployed Starters describe block yields zero tests
+// and Playwright's --grep fails with "No tests found."
 const STARTERS: Starter[] = registry.integrations
   .filter(
     (
@@ -380,7 +389,7 @@ const STARTERS: Starter[] = registry.integrations
     } =>
       Boolean(i.starter?.demo_url) &&
       (!STARTER_SLUG || i.slug === STARTER_SLUG) &&
-      (SMOKE_ALL || i.starter?.deployed === true),
+      (SMOKE_ALL || i.deployed === true),
   )
   .map((i) => ({
     slug: i.slug,